Lead increases the machinability of brass as well as increasing its strength and resistance to corrosion. The addition of lead also seals shrinkage pores to provide pressure tightness. Brasses can contain up to 3.5 percent in lead contents, and are classified as low, medium, or high-leaded. Leaded brass may be used to make screws, valves, fittings, bearings, specialty fasteners, architectural hardware, and general purpose machine parts.
C345 Typical Uses (SAE J461):
Industrial:Pinions, Gears, Valve Stems, Flare Fittings, Adapters, Couplings
Plumbing:Plumbing Fittings, Plumbers' Brass Goods
EN equivalent is CuZn38Pb2
Builders Hardware: Drawer Pulls, Hinges, Drawer Handles
Consumer: Bicycle Spoke Nipples, Clock and Watch Parts, Clock Plates and Nuts, Key Blanks
Fasteners: Nuts, Rivets, Screws
Industrial: Ratchets, Instrument Backs, Automatic Screw Machine Parts, Valve Stems, Pinions, Flare Fittings, Couplings, Bearing Cages, Channel Plate, Wheels, Gears, Adapters
Other: Engravers Plate
Plumbing: Faucet Seats, Faucet Stems, Pipe Fittings, Plumbers Fittings, Plumbers' Brass Goods
Typical Uses for C38000 Architectural Bronze "Low Leaded" Brass:
ARCHITECTURE: Thresholds, Architectural Sections, Door Frames, Window Frames
BUILDERS HARDWARE: Hinges, Builders Hardware, Butts
OTHER: Extruded Shapes
Marine hardware, screw machine products, valve stems.
Common Fabrication Processes
Hot forging, pressing and machining.
High ductility, high electrical and thermal conductivity, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.
Typical Uses for C48500 Naval Brass "High Leaded":
INDUSTRIAL: Valve Stems, Light Bearings, Gears, Screw Machine Parts
MARINE: Marine Hardware, Seawater Valve Stems
Typical Uses for C836 Leaded Red Brass "SAE 40":
ARCHITECTURE: Ornamental Fixtures
BUILDERS HARDWARE: Hardware
BUILDING: Lightning Protection, Heating Equipment, Cooling Equipment, Trowels for Cement Working
ELECTRICAL: Electrical Hardware, Switches, Electrical Equipment
FASTENERS: Large Hold Down Screws
INDUSTRIAL: Handles for Dental Equipment, Air Actuators, Valve Bodies, Valves, Bushings, Pump Parts, Pumps, Valve Bodies, Impellers, Pump Fixtures, Couplings, Valves, Transducer Housings, Valve Bodies for the Water Meter Industry, Valves for the Water Meter Industry, Pumps, Low Pressure Valves, Small Gears, Bearings, Bearing Segments for Steel Industry, Pressure Blocks for Steel Industry, Rings, Printing Presses, Furnace
MARINE: Marine Products, Parts for Boats
PLUMBING: Faucets, Fixtures, Pipe Fittings